\Header{poisons}{Animal Survival Times}
\keyword{datasets}{poisons}
\begin{Description}\relax
The \code{poisons} data frame has 48 rows and 3 columns.


The data form a 3x4 factorial experiment, the factors being three poisons
and four treatments.  Each combination of the two factors was used for
four animals, the allocation to animals having been completely randomized.\end{Description}
\begin{Usage}
\begin{verbatim}
data(poisons)
\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data frame contains the following columns:


\describe{
\item[\code{time}] The survival time of the animal in units of 10 hours.

\item[\code{poison}] A factor with levels \code{1}, \code{2} and \code{3} giving the type of poison used.

\item[\code{treat}] A factor with levels \code{A}, \code{B}, \code{C} and \code{D} giving the treatment.
}\end{Format}
\begin{Source}\relax
The data were obtained from


Box, G.E.P. and Cox, D.R. (1964) An analysis of transformations (with
Discussion). 
\emph{ Journal of the Royal Statistical Society, B}, \bold{26}, 211--252.\end{Source}
\begin{References}\relax
Davison, A.C. and Hinkley, D.V. (1997) 
\emph{Bootstrap Methods and Their Application}. Cambridge University Press.\end{References}

